A 400-MHz 6-bit ADC with a partial analog equalizer for coaxial cable channels

Amir Hadji-Abdolhamid, D.A. Johns

2004 · 13 citations · 5 references

Concepts

Abstract

High-speed high-resolution analog-to-digital converters (ADC) are one of the major bottlenecks in digital communication systems. This work investigates the ADCs bit requirements for wired communication applications and presents an efficient partial analog equalization approach to improve the performance of the front-end ADC by 2-3 bits. The proposed partial analog equalizer along with a 6-bit 400-MHz flash ADC consumes 106 mW of power with 34-dB SNDR in a 0.18-/spl mu/m CMOS process. For a 400-Mb/s data transmission over a 240-m coaxial channel, experimental results show an error performance improvement equivalent to an 8-bit ADC system.

References

5